... .Type:carbonsteel elbow 3.Material:carbon steel 4.Connection:Welding SR carbon steel elbow1. We have all kinds carbon steel elbow ... 2.SR carbon steel elbow3. 150lb 300lb 600lb 900lb 4. ANSI AMSE ... ,Electrical Factory,Building ConstructionStandardANSI, JIS,DIN,GB,BSThicknesssch5s-xxsQualityFirst Grade SR carbon steel elbow